Introduction
The IS-136 MS and IS-136 DB test program supports you in signaling tests as
well as RX and TX tests on IS-136 mobiles. Precise, numeric measured figures
are read out of course. What is new, and indispensable for a fast visual check of
performance, is the graphic presentation of the quality parameters of the modu-
lator in the "constellation display". Here you can recognize phase and magnitude
errors of the modulator at a glance. And what is also useful for a fast visual check
is the graphic display of the burst and modulation spectrum of a mobile.
What is tested
Call from mobile RF power
Call from base station Frequency offset
Handoff procedures ∆P/symbol
Hookflash Origin offset
Speech loop RMS vector error (graphic)
Bit error rate (BER) Phase error (graphic)
Mobile-assisted handoff (MAHO) Min./max. magnitude (graphic)
Modulation spectrum (graphic) Time alignment
Burst power (graphic) Standard analog measurements
☞
The IS-136 DB test program allows to select the down-banded channels addition-
ally. All other features are the same as offered by the IS-136 MS test program.
10
Introduction IS-136 MS
10-5
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